A father Monday filed a lawsuit against Southwest Airlines, claiming his 14-year-old son was “aggressively” pursued by an older woman who offered the boy sex and drugs during a flight, Sun-Times Media reported.

The man, from Chicago, alleges his son was forced to sit next to the woman on the 2008 flight from Chicago to Orlando — and when he repeatedly got up to avoid her was told to sit down again by staff.

The suit, filed in Cook County Circuit Court, claims the airline was negligent because flight attendants failed to protect the boy, who was left so shaken he refused to take a return flight home alone.

“My client was a 14-year-old little boy when he was aggressively, sexually pursued by an older passenger who offered him drugs, who wanted sex from him,” said Chicago attorney Jeffrey S. Deutschman.

“He went to the bathroom four times, he asked to move and he was told to take his seat.”

The personal injury lawsuit, in which the family is seeking at least $50,000, claims the woman “was obviously intoxicated and/or under the influence of other drugs.”